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M. J. TRUIVIBLE.

APPARATUS FOR HEATING PETROLEUM OILS.

APPLICATION FILED SEPT. 16. 1912.

Patented Aug. 15, 1916.

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APPARATUS FOR HEA TING PETROLEUM OILS.

APPLICATION FILED SEPT. 16| 9l2.

Patented Aug. 15, 19116.

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MILON JAMES TRUMBLE, OF ARTESTA, CALIFORNIA, ASSIGNOR, BY MESNE .ASSTGN- MENTS, T SIMPLEX REFTNTNG COMPANY, A CORPORATION OF CALTFORNTA.

APPARATUS FOR HEATING PETROLEUM-UTLS.

minimum Specification of Letters Patent.

Fatentecl Aug. 1216.

To all whom it may concern.:

Be it known that 1, MiLoN JAMES TRUM- BLE, a citizen of the United States, residing at Artesia, in the county of Los Angeles and State of California, have invented a new and useful Apparatus for Heating Petroleum- Oils, of which the following is a speciication. f This invention relates to heating coils or retorts employed in heating a flowing body of petroleum oils passing to an expanding chamber, wherein that portion of the oil heated to an expanding temperature is permitted to leave such heated oil.

The principal object oit my invention is to provide means whereby the heating coil or retorts will be relieved of all gasl pressure, thereby permitting the heating coil to be kept full of oil, whereby any burning of oil or deposition of carbon within the retorts or coil is prevented.

@ther objects and advantages will appear from the specilication and appended claims.

The accompanying drawings illustrate my invention.

Figure 1 is a vertical cross section of a furnace and heating coil embodying one form of my invention. Fig. 2 is' a vertical cross' section of a heating coil vembodying another form of my invention, the coil being shown removed from the furnace. Fig. 3 is a diagrammatic plan of Fig. 2. Fig. 4 isa perspective plan view of-the iorm shown in Fig. 1, removed from the furnace if'or clearness of illustration. d

Retorts 1, 2, 3, 4, 5-and 6 connectedby tts 7, 8, 9, and 11 constitute a heating coil adaptable for heatingpetroleum oils which is preferably located ina furnace in the manner shown in Fig. 1.

The oil to be heated is supplied to the coil through' retort 1 by means ot the inlet pipe 12 Figs. 3 and 4 connecting with a suitable constant source ot supply, not shown. The

oil after passing through the coi-l is taken` irom the retort 6 by oil outlet pipe 13. lin Fig. 1 1 have shown. the furnace as consisting ot three re chambers 14, 14, 14 with two retorts inclosed in each chamber.

By-passing means is provided tor' each ot said retorts or segmentsof the heating coil, and is shown in Figs. 1,2, 3 and 4 as a 'U consisting or a gas-Withdrawal pipe 15, a connecting pipe d16, and a turn-down gasdelivery pipe 17. 1n Figs. 1 and 4 these tls are shown with the pipe 15 lying within the chamber ot the retort from which the gas is to be taken, with its open end near the upper part of the chamber. rlhe pipe 16, connecting with the pipe 15, lies within the Us connecting the retorts andconnects the pipe 15 with the turn-down pipe 17 in the next retort; while in Figs. 2 and 3 the gas-by-passing means is shown as consisting of the pipe 15 entering through the upper part oit the retort and connecting with the turn-down pipe 17 in the'next retort by means of the pipe 16.

In the form shown in Figs. 1, 2, 3 and 4, pipe 18 a'ords a by-passl for the gas from retort 6 to the' oil outlet pipe 13, by which it is conveyed with the heated oil to a suitable evaporating chamber.

A steam pipe 19, Fig. 4, is provided to deliverl steam into a header 20 with which steam ]et pipes 21,22, 23, 24, and 26 connect. Each jet pipe is provided with a valve 27 to control the amount of steam passing from header 20. Each retort, as shown in Fig. 4, is provided with a head 28 through which the steam jet pipes pass to the interior of such retort. These steam jet pipes are preferably bent downwardly at 29 to permit the straight portion 30 ot such pipes to lie horizontally along the bottom of the retort. Ferforations are provided in the horizontal portion 30 through which steam is admitted to the bottom of the oil within the retort.

31 is a cap on the end of the steam jet pipes to prevent steam from blowing through the end ofthe pipes and to compel the same to issue from the pertorations 35. r1`he arrangement of each of the steam jet pipes 22, 23, 24, 25 and 26 in their respective retorts 1, 2, 3, 4, 5 and 6 is identical,

vand the indications employed in connection with retort. 1 of Fig. 1 are applicable to all.

A valve 32 Fig. 1 is provided in pipe 13 to control the oil flow through the retorts.

33 is a Valve arranged to control the dow ci gas from the retorts.

lin operation, oil to beheated is supplied to the heating coil from a constant source under pressure through pipe 12, and while passing through the several retorts is heated and conveyed away from the coil by pipe 13, heat being applied to the several retorts by tires within the chambers 14, 14, 14. rlihe ow of oil through the coil is controlled by suitable means such as regulating the 32 to hold such oil Within the coil until it has acquired the desired temperature. Any gas forming `Within the several retorts will seek a level above the oil Within the retort and Will at once enter the open end of the pipe 15 and pass from the retort.

In the form shown in Figs. 1,- 2, 3 and- 4, gas formed in retort 1 will by-"pass to retort 2, from vWhich it Will by-pass to retort 3, together With the gas formed in retort 2, and Will continue tov be by-passed from retort to retort throughout the entire coil until it finally reaches retort 6, from which it vvill be bypassed to pipe 13 through the by-pass pipe 18.

When desired, steam is admitted to the several retorts through the several steam jet pipes to agitate the oil, thereby preventing any sediment from collecting upon the bottom of the retorts. This agitation by steam also results in bringing all of the oil flowing through the coil into heat absorbing contact With the shell of the retort, thereby materially hastening the heatin of the oil. The' gas by-passes, as shown, Wi l relieve all pressure upon the oil Within the retort which may be created bythe introduction of the steam.

I have discovered that WhereA heating retorts are provided for heating petroleum oils, that if gas is allowed4 to accumulate Within such retorts the pressure thereof will force the oil out of the retorts and create a space above the oil occupied by the gas, which, being dry, permits the edges of the surface of slich liquid Within the retort to become burned or cracked, which causes the generation of a non-condensible gas and the depositing of a carbon Within the oil. This action Will continue to deposit carbon which in a very short time will ll the retort and render it useless, as such carbon when deposited forms a non-heat-conducting surface on the interior of the coil and permits the iron to become blistered and burned in a very short time.

By providing the gas by-passing means I am enabled to keep each of the retorts com-4 pletely filled With oil and thereby avoid forming any gas space Within the retorts With its accompanying deleterious effects.

What I claim is 1. In an apparatus for heating petroleum oils, the combination of an oil heating coil arranged to absorb heat, an oil inlet pipe arranged to supply oil to such coil, an outlet pipe arranged to conduct heated oil from such coil, and by-pass means arranged to draw gas from the coil and deliver the same into the heated oil outlet pipe.

2. In an apparatus for heating petroleum oils, the combination of an oil heating coil consisting of a plurality of retorts and U-connections arranged to form a continuous passage for the oil, steam jet pipes arranged Within such retorts, an oil inlet pipe arranged to supply oil to be heated to one end of the coil, an oil outlet pipe at the other end of such coil, and by-pass means arranged to by-pass gas from the retorts into the oil outlet pipe.

In testimony whereof, I have hereunto set my hand at Los Angeles, California, this 31st day of August, 1912.

MILON JAMES TRUMBLE.

F. M. ToWNsEND, FRANK L. A. GRAHAM. 

